What is Concept Testing?

Legal Definition
Concept testing (or market testing) is the process of using quantitative methods and qualitative methods to evaluate consumer response to a product idea prior to the introduction of a product to the market. It can also be used to generate communication designed to alter consumer attitudes toward existing products. These methods involve the evaluation by consumers of product concepts having certain rational benefits, such as "a detergent that removes stains but is gentle on fabrics," or non-rational benefits, such as "a shampoo that lets you be yourself." Such methods are commonly referred to as concept testing and have been performed using field surveys, personal interviews and focus groups, in combination with various quantitative methods, to generate and evaluate product concepts.

The concept generation portions of concept testing have been predominantly qualitative. Advertising professionals have generally created concepts and communications of these concepts for evaluation by consumers, on the basis of consumer surveys and other market research, or on the basis of their own experience as to which concepts they believe represent product ideas that are worthwhile in the consumer market.

The quantitative portions of concept testing procedures have generally been placed in three categories:

(1) concept evaluations, where concepts representing product ideas are presented to consumers in verbal or visual form and then quantitatively evaluated by consumers by indicating degrees of purchase intent, likelihood of trial, etc.,
-- Wikipedia
Legal Definition
When an invention is tested using a prototype.